Bearing-obstruction ejector



Patented Apr.. 6, 1926.

UNl'l'ED STATES PATENT OFFICE.

PHILLIP R. DIERINGER, 0F SAN FRANCISCO, CALIFORNIA, ASSIGNOR T0 MILTONA.

FRANK, OF SAN ANSELMO, CALIFORNIA. i

BEARING-OBSTRUCTION EJ'EOTOR.

-Application led October 28, 1924. Serial No. 746,324.)

To all whom t may concern.'

Be it known that I, PHILLIP R. DIERINGER, a citizen of the UnitedStates, residing at San Francisco, in the county of San Francisco, Stateof California, have invented a new and useful Bearing-ObstructionEjector, of which the following is a specification in such full andclear terms as will enable those skilled in the art to construct and usethe same.

This invention relates to an apparatus for the purpose'of ejecting'obstructions from journal bearings, and its object is to provide meanswhereby a well-known form of pressure pump lubricator may be applied tothis device to put on' a sufficiently heavy initial pressure to make theoperation of this device effective when its plunger is struck a sharpblow with a hammer or mallet.

It will be understood by those skilled in the art that it is common toprovide one form or another of high pressure pumps for use in forcinggrease into various types of machine journal bearings. These lubricatingpumps are especially used in connection with automobiles and othermachines where the journal bearings become filled with mud and dirt,however, such bearings frequently become so stopped up that it takes anenormously high pressure to drive out. the dirt or other matter that maybe the cause of stoppage in the bearing, and this high pressure cannotbe attained with any ordinary form of screw feed or force feed, but inpractice can be attained only by using a very small plunger and strikingthe plunger with a hammer or mallet, that being the method of increasingthe pressure of the lubricant within the bearing after an initialpressure has been put upon it with one of the ordinary forms of pressuregrease guns.

Other objects of the invention will appear as the description proceeds.

An embodiment of the invention is shown in the accompanying drawings inwhich the' same reference numeral lis applied to the same portionthroughout, but I am aware that there may be modifications'thereof.

Fig. 1 is a longitudinal sectional view through the ejector. Fig. 2 isan end view of the from the right of Fig. 1. y

The numeral 1 indicates ax short piece of steel which -has a nipple2.',turned and threaded on one end. A small hole' 8 1s ejector lookingbored in the member 1 and a hole 4 extends from the bottom of the hole 3through the nipple 2. Slidable in the hole 3 is a plunger 5 with astriking head 6. This plunger is attened at 7 and the member 1 has a set60 screw 8 which prevents the plunger 5 from being ejected from themember 1 under the high pressure applied to the lubricant by the greasegun.

Secured in the side of the member 1 is a 55 well-known form Vof.lubricator fitting 10 which has a threaded nipple 11, a hexagonalportion 12 for securing it into the member 1, two pins 13 and 14 forsecurin the grease gun fitting thereto and said memer also has aball-check 16 for preventing the grease from escaping therefrom. Inoperation the ordinary form of grease gun is used wherever the bearingsare sufliciently loose to allow the grease to be forced therefrom intothe bearings. If there is a bearing Ithat is so tight with dirt or rustthat theordinary grease gun cannot be used to force the grease thereintothe common fitting, which is substantially like the fitting 10, isremoved from the journal'and the nipple 2 is screwed thereinto inplaceof that fitting. The grease gun then has its connecting fitting appliedto the member 10 and grease is lforced into the chamber 3 as tightly aspossible. This ejects the plunger 5 to the position shown in Fig. 1, andas soon as this is done, a sharp blow is struck upon the head 6 whichplaces such a high pressure upon the grease. within the bearing andchamber 3 as to be capable of forcing any obstruction out of thebearing.

It will be seen that the head 6 strikes the end of the member 1 beforethe end of the rod 5 touches the bottom of the lubricant chamber torevent injury to said small rod.

What I c aim is as follows, but modifications may be made in carryingout the invention shown in the drawings and in the above particularlydescribed form thereof within the purview of the invention as delinedbythe annexed claims: i

1. A bearingobstruction ejector, comprising an elongated member havingaihole extending longitudinally therethrough, a plunger extending intosaid member and provided with a striking vhead, a vset screw forlimitingthe movement'of said plunger4 f and a fitting applied tosaidmember to' perf- 19 i i the-forcing ofe lubricant into the first Imember under a comperetvely high pres- 2.. A obstructionl ejectorcomprising en eloligted member having a hole extending'longitudinallytherethrough, means to connectl said member to.. alubricating device atone end, lan plunger extending into said member having' a striking head,means to limit the movement of said lunger', and a itting applied tosaidmem er 'tovpe'rmit lubricant to be forced into it from a suitablegrease gun, .the plunger being arranged to cnt oi the opening to saidlubricant supply with a /very slight forward movement whereby the highpressure developed when the plunger is struck will not aect thelubricant fitting.` e fi In testimony whereof I have hereunto set myhand this 17th day of April, A. D. 1924'.

PHILLlP R. .DIERINGER-

